Hellgatelondon.com has posted the official benefits package for pre-ordering the game. In short:

Become a member of the beta program running from Sept 17th to Oct 7th.

Get a special dye package for your armor.

Be eligible for the founder’s price of $145 for a lifetime membership to the multiplayer mode of the game.

Now I did pre-order the collector’s edition of this game but I wasn’t really looking forward to multiplayer action yet. I liked the idea of my lone Paladin slashing up the forces of evil. But what do I know, I am just the GamingShogun.